node js react tutorial

writes the contents to the Output.txt file readerstream.pipe (Writerstream); Console.log ("Completion of program execution");Chained flowA chain is a mechanism that flows through the connection output to another stream and creates multiple pairs of flow operation chains. Chained streams are typically used for pipeline operations.Next we are using pipelines and chains to compress and decompress files.Create the Compress.js file with the following code: var fs = require ("FS" var zlib = requir

There is installation on the uninstall, uninstall Tutorial reference: http://www.cnblogs.com/EasonJim/p/6287141.htmlFirst, the official Download pkg installation package 1, installationTo the official website https://nodejs.org/en/downloadSimply double-click to run.2. UpdateDownload the latest installation package directly from the official website and install it all the way to the next step.Reference: Http://stackoverflow.com/questions/11284634/upgra

(() => { socket.emit('random', Math.random())}, 500)socket.on('warn', count => { console.log('warning count: ' + count)})socket.on('disconnect', () => { clearInterval(interval)}) Transmission stream Socket. io can process streams Server code io.on('connection', function (socket) { let stream = ss.createStream() ss(socket).emit('script', stream) fs.createReadStream(__filename).pipe(stream)}) Client code let socket = io('http://localhost:3000') ss(socket).on('script', stream => { let buffer =

starting position of the file read, and if the value of position is NULL, it is read from the position of the current file pointer.Callback-callback function, there are three parameters err, Bytesread, Buffer,err is the error message, Bytesread represents the number of bytes read, and buffer is the cache object.7. Close the file:Fs.close (FD, callback)This callback finally has no parameter!!!8. Interception of documents:Fs.ftruncate (FD, Len, callback)The parameters use the following instructio

Test with AB under ApacheFollow: the Apache AB (Stress test tool) Tutorial is referenced below:http://blog.csdn.net/ahaaaaa/article/details/51514175Compile version installation and configuration:Http://www.cnblogs.com/gsls200808/p/4506301.htmlMSI: Version downloadhttp://archive.apache.org/dist/httpd/binaries/win32/Ad can fully simulate a test request initiated against a Web server under various conditions, and it can also initiate a test request local

The third chapter of the original tutorial Https://github.com/nswbmw/N-blog/wiki/_pagesThere are three ways to upload files now:Use Express's own file upload feature, no database involvedUse formidable external module, no database involvedUploading to MongoDB, involving the databaseHere you use the first, the user will file, stored in: blog/public/images/folder.Blog/views/header.ejs in Index.js Add code:Fs=require (' FS '),And:New Upload.ejs under blo

Original link: Node-webkit tutorial (15) Debug typescriptThe content of this article also applies to the Chrome browser.In the configuration item for the Chrome developer tool, there is a sourcemap option to configure the JavaScript source and generate code relationships. If you can debug the typescript code directly in the browser, we can really appreciate the joy of typescript development.First open the C

Express. js is an MVC development framework of nodejs and supports multiple templates such as jade. Next, let's talk about the installation of express and the configuration of the app. js file. In the future tutorial, we will use express. js to build a chat room step by step. Install express.

What should we do when we get a DOM node and want to insert a new DOM within this DOM node?If the DOM node is empty, for example, then the innerHTML = ‘ content of the DOM node can be modified directly, equivalent to "inserting" a new Dom Node.If the DOM node is not empty,

Translation Three. js is a great open-source WebGL library. WebGL allows JavaScript to operate on GPUs and implement 3D in the browser. However, this technology is still in its development stage, and there is a shortage of materials. Fans should learn it through the Demo source code and the source code of Three. js.0. Introduction Previously, I have provided an article titled getting started with Three.

Article Introduction: JS in Browser Compatibility Tutorial: Dom method and object reference. 1. getElementById "Analysis Notes" to first look at a set of code:Value= "Click Me" ōnclick= "alert (id.value)"/> In Firefox, the button does not respond, in IE, you can, because for IE, the ID of an HTML element can be used directly in the script as a variable name, but not in Firefox. "Compatibility p

Vue. js integrates the pull-up loading drop-down refresh instance tutorial in vux, vue. jsvux Preface Vux is a mobile page UI component library developed based on Vue and Weui. It was originally developed to meet the company's end form requirements, because the third-party questionnaire form system is ugly on the mobile phone (or the PC style is adapted to the size ). As a result, the form component was rec

Pdf. js tutorial The charm of the pdf. js framework is implemented for HTML5, without any local support, and the browser compatibility is also good. There is only one requirement: the browser supports HTML5! (However, for earlier versions of IE, we can only mourn !) It is said that IE9 and above are OK, because I use IE11 locally, so I only tested it on IE11 and

This article for H5EDU institutions official HTML5 training courses, the main Introduction: JavaScript reinforcement tutorial-Cocos2d-JS screen adaptation solution 1. set the screen adaptation policy (ResolutionPolicy) If you have not... this article is H5EDU official HTML5 training courses, mainly introduces: JavaScript reinforcement tutorial-Cocos2d-

textContent all the text is returned. Also note that ietextContent .Modifying CSS is also a frequently needed operation. The properties of the DOM node style correspond to all of the CSS, which can be directly obtained or set. Because CSS allows font-size such a name, it is not a valid JavaScript property name, so it needs to be rewritten in JavaScript as a camel-named fontSize :// 获取p id="p-id">...p>var p = document.getElementById(‘p-id‘);// 设置CSS:p

With the website features gradually enriched, the page JS also become more and more complex and bloated, the original through the script tag to import a JS file this way has been unable to meet the current Internet development model, we need team collaboration, module reuse, unit testing and a series of complex needs.Requirejs is a very compact JavaScript module loading framework and is one of the best impl

As the site functions gradually rich, the page JS also become more and more complex and bloated, the original script tags to import a JS file this way has not been able to meet the current Internet development model, we need team collaboration, module reuse, unit testing, and so a series of complex needs. Requirejs is a very compact JavaScript module loading framework, one of the best implementations of AMD

The Vue. js component uses the Development Instance tutorial component. Components can expand HTML elements and encapsulate reusable code. at a high level, components are custom elements and vue. the js compiler adds special functions for it. In some cases, components can also be in the form of native HTML elements and can be extended with the is feature. The V

Document directory What is an ext plugin ?) Steps for adding a function (Approaches to adding functionality) Implement a plug-in implementing a plugin A fieldlabeler plugin Summary November 11,200 9 by Nigel white Translation: Frank Cheung (zhangxin)Ext js advanced plug-in development tutorial advanced plug-in development with ext JS When creating a c

JavaScript: several methods for JS to obtain HTML elements in a webpage. Javascript tutorial GetElementById getElementsByName getElementsByTagName GetElementById, getElementsByName, getElementsByTagName The last two are the collection, and the byid is only a single object. GetElementById usage For example: Taoba Reference Method on the same page: 1. Use id: Link1.href, return a http://homepage.yesky.com 2